In yesterday’s press conference announcing SIG SAUER’s victory in the Next Generation Squad Weapon competition, Army officials said America’s likely future adversaries were a key factor in the final choice. The XM5 (a variant of the SIG MCX) and the XM250 machine gun run the recently-developed 277 SIG FURY hybrid steel/brass cartridge. It’s some spicy stuff.
The round’s 80,000 psi pressure can push a 135-grain bullet to velocities of 3,000 feet per second.
Continue reading The XM5 and 6.8×51 Ammunition Will Be a Decisive Advantage. U.S. Allies Should Adopt It, Too at The Truth About Guns.